Usage: Used for low pressure liquid delivery, such as water, gas, and oil.Process:ERW (Electric Resistance Welded)HFI (High Frequency Induction)EFW(ELECTRIC FUSION WELDED TUBE)LSAW (Longitudinal Submerge-arc Welded) UO(UOE), RB(RBE), JCO(JCOE)DSAW (Double Submerged arc welded)SAW (Spiral Welded)SSAW (Spiral Submerged-arc Welded)Special Welded tubes Quality Standard: ERW HFI , EFW, LSAW, DSAW: GB/T3091 Welded steel pipe for low pressure liquid deliveryGB/T9711 Petroleum and natural gas industries--Steel pipe for pipelinesIS: 3589 Steel tubes for water and sewage IS : 1978-1982 Steel tubes for use in transportation of oil; gas & Petroleum products BS: 1387 Steel Tubes for use for Water, Gas, Air and SteamASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessDIN 2458 WELDED STEEL PIPES AND TUBESEN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties API 5L Line PipeSAW SSAW:SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service SY/T 5040 Spiral submerged arc-welded steel pipe pilesCJ/T 3022 Spiral submerged-arc welded steel pipe for municipal heat supply IS : 1978 Steel tubes for use in transportation of oil; gas & Petroleum products ASTM A252 WELDEDAND SEAMLESS STEEL PIPE PILESCoating Standard: ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systemsDIN 30670 Polyethylen coatings of steel pipes and fittingsSteel Grade: GB/T3091, SY/T5037, SY/T 5040, CJ/T 3022: Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8 BS: 1387, EN10217: S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C, Gr.DAPI 5L: A, B, X42, X46, X52, X56, X60, X65 X70 GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555Size:A179
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